公开(公告)号：US06528012B2

公开(公告)日：2003-03-04

申请号：US09820862

申请日：2001-03-30

申请人： Kazutoshi Nishimoto ,  Naoshige Kubo ,  Hiroshi Iwahashi ,  Shuji Yamamoto ,  Hidefumi Yamanaka ,  Shinji Koga ,  Yutaka Chida ,  Taketo Yamakawa ,  Kouji Michiba ,  Hiroyuki Hirata ,  Kazuhiro Ogawa ,  Toshinobu Nishibata

发明人： Kazutoshi Nishimoto ,  Naoshige Kubo ,  Hiroshi Iwahashi ,  Shuji Yamamoto ,  Hidefumi Yamanaka ,  Shinji Koga ,  Yutaka Chida ,  Taketo Yamakawa ,  Kouji Michiba ,  Hiroyuki Hirata ,  Kazuhiro Ogawa ,  Toshinobu Nishibata

IPC分类号： C22C3808

CPC分类号： C22C38/105 ,  B23K35/3033 ,  B23K35/3066 ,  C22C38/005 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  Y10T428/12951 ,  Y10T428/12958 ,  Y10T428/12965

摘要： In a welded structure and welded pipe, having members joined to each other by welding wherein, at least one of the members is formed of Fe—Ni-base low thermal expansion coefficient alloy, there is provided a welded structure and welded pipe having a weld metal free from cracking and achieving an excellent toughness and stress corrosion cracking resistance. Further, a welding material is provided which can form such a weld metal and is excellent in workability and weldability in fabrication. The weld metal comprises, on the weight % basis, Ni: 30 to 45%, Co: 0 to 10%, C: 0.03 to 0.5%, Mn: 0.7% or less, either one of or the total of Nb and Zr: 0.05 to 4%, and rare earth element: 0 to 0.5%, with impurities being P: 0.02% or less, Al: 0.01% or less, and oxygen: 0.01% or less, wherein each of Si and S satisfies the following formulas {circle around (1)} and {circle around (2)}, where each element symbol in the following formulas {circle around (1)} and {circle around (2)} indicates the content (weight %) of each element. Si≦0.1(Nb+Zr)+0.05%  {circle around (1)} S≦0.0015(Nb+Zr)+0.0055%  {circle around (2)}

摘要翻译： 在焊接结构和焊接管中，具有通过焊接彼此接合的构件，其中至少一个构件由Fe-Ni基低热膨胀系数合金形成，提供焊接结构和焊接管，其具有焊接 金属无裂纹，具有优异的韧性和应力腐蚀开裂性。 此外，提供了可以形成这种焊接金属的焊接材料，并且加工性和制造中的可焊接性优异。 焊接金属以重量％计含有：Ni：30〜45％，Co：0〜10％，C：0.03〜0.5％，Mn：0.7％以下，Nb和Zr： 0.05〜4％，稀土元素：0〜0.5％，杂质为P：0.02％以下，Al：0.01％以下，氧：0.01％以下，Si和S分别满足下式 {round around（1和{circle around（2，where each element symbol in the following formula {circle around（1 and {circle around（2表示每个元素的含量（重量％））。